A device that produces electricity by transmdy7 40fqst4nforming chemical energy into electrical energ4 q74mdytsf0ny is called a

  A car battery

  The total amount of ch 9 1z+plmgwqo5k) c. i2aji 1w+j1moeyarge that passes through a wire's full cross section at any point per unit of timm1 1 )qm5 1.gwlw+2ao ijoyc +k9zjipee is referred to as

  The direction of convention current is taken to be the dire y u04q) cfrtn4+yw3qnction that

  A coulomb per second is the samm; kp3c8c cir0e as

  Car batteries are rated in "amp-hours." This is a measure o8j) z3 flyw+hsf their

  The resistance of a wire is define k1 znnr:133tnsa,ks hd as

  What is $1 \; \Omega$ equivalent to?

  The resistance of a wd0*)ikce,whrqcd 8 j 7ire is

  The resistivity of an5 (:1qo.dz qp8rv buu wire depends on

  Which conducting material has the lowest resistivity value?9 lytand1lxqlw6m4+6r a 8n ,e

  Consider two copper wires. One has twice the length of themaqxh1ho,;aex +7-wu ;hh2j o other. How do the resistivi7 2-;qe+ 1muhhxxoahwa , j;ohties of these two wires compare?

  Consider two copper wires. One has twic bd 3c bkzkk8570pj6.x39xen vdu7i kue the length of the other. How do the resistances of these two0pd36 z7 d7vix.8bkknb 9ukj kx53cue wires compare?

  Consider two copper wire2q4:fzher49q-rvn ah s. One has twice the cross-sectional area of the other. How do the resistances of these e rfz4-2 :qa9hrv4hqntwo wires compare?

  Consider two copper wires. One has twice the length and twice the cross-sectis2(3 r h5gtn3 p3mp;l;wzqph nonal area of the other. How do the resistances of these two wires compnhwnrzp335; 3gqp( shm2t; l pare?

  The length of a wire is doubled and the radius is dou. 9j-c pwqvl:pbled. By what factor does the rqvlcp-: .wp 9jesistance change?

  How much more resistance doesz ndcy;mb7l lt,9;*982yksvf9wn xs c a 1.0 cm diameter rod have compared to a 2.0 cm diameter rod of the same length and made of thelfc7 8vs x9yktl sn,;*dc92bm9wnz; y same material?

  The resistivity of most common metals bwu*;7j4:xgnc cg7; w .suvqn

  Negative temperature ehpi9 j m7 zi1kq3s6v+coefficients of resistivity

  What is 1 W equivalent to?eerl 2 cyc p-h6xj87kvt(gc0xd6:3qa

  A kilowatt-hour is equiva*rq:xu u7yu2elent to

  If the resistance in a constant voltage circuit is doubled, the power2r-h )jfb3r nt dissipated by-)2r3tnrj bfh that circuit will

  If the voltage across a circuit of constant reu it7(, i;r gjh4u 4jat3o/ohxsistance is doubled, the power dissipatoxr; itao, h3u4 4jugi7t/h(jed by that circuit will

  If the resistance in a c+z6do / rgk,gue)t8auircuit with constant current flowing is doubled, the power dissipated by that cuz+uetog,6 /k)g r a8dircuit will

  If the current flowing through a circuit of constant resistance is doubled, th2 km 5-yk2mwld8vgr - :duebvu17pai1e -dbvp- 7wk ad12geum :i yvu1l5m2kr8power dissipated by that circuit will

  During a power demand, the voltage output isrh 45 .9us)gx fwnne6p reduced by 5.0%. By what percentage is45xrw fn9e)n s6ug.hp the power on a resistor affected?

  A current that is sinusoidal with- z/w eag8;.9ikmtec y respect to time is referred to as

  Consider two copper wires each carrying a current of 3.0 A.lb*t oh1pk l2d4*t 3b6 z7hobn One wire has twice the diameter of the other.b *h lhl61z oo d37bnbtkp4t2* The ratio of the drift velocity in the smaller diameter wire to that in the larger diameter wire is

  Materials in which the resistivity becomes essentially zero at very lowva z55-:,j f;cut 6zcqx6b dmt1 uccm/0ogv*z temperatures are referredfau q65mc6xgvt;1dm cz /v- 0c tzb*:c5 jo,zu to as

  What current is flowing if 0.67 C oftm +n3u.pis/ h charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating apparatus in 2.0 min. What d ktdde9f.ht263x/rk is the avet hk9x26 kd/tdf3r.derage current?

  How much charge must pass by a point insltas b ks3h p)(;c-e; 10 s for the current to be 0.50 A?

  A total of $2.0 \times 10^{13} \; protons$ pass a given point in 15 s. What is the current?

  What current is flowing if7vk0mxu)ey d mz/9a n3 $4.0 \times 10^{16} \; electrons$ pass a point in 0.50 s?

  If $3.0 \times 10^{15} \; electrons$ flow through a section of a wire of diameter 2.0 mm in 4.0 s, what is the current in the wire?

  A coffee maker, which draws 13.5 A of cuycnb3*;m v yo2rrent, has been left on for 10 min. What is the net number of electrons that have passed through the coffeom;cyn 23vy*b e maker?

  In an electroplating process, it is desired to deposit 40 mg of silver on a 9 (.6crukddmlmetal part by using a current of 2.0 A. How long must the current be allowed to run to deposit this.uk cmdd9r6(l much silver? (The silver ions are singly charged, and the atomic weight of silver is 108.)

  What potential difference is required 6g+hcr 8h*n ssy+c(5 - rrd/rkfd+hhato cause 4.00 A to flow through a resistance d/+k*nc8yarsc r6 rhf-hh+s+5 h(dgrof 330 W?

  What is the voltage acros x86yjo( +ykzqx 3jg s7vz(u4vs a 5.0-W resistor if the current through it is 5.0 A?

  A 4000-W resistor is connected across 2qg. )xhi0m 2fyz.*ll r20 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is4 m5b wq,9rtl 1s:1nq7s2ilqazra: ig its resistance?i4wa ,z qsrmq21sbtgl 1 lq9a5n:7ri :

  A 12-V battery is connectedt8 :g j0z0zfr1 w(nbmlt(g z2v to a 100-W resistor. How many electrons flow througztrmz( 0j l08 gn1f(zgwv2t: bh the wire in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 iz 3 1 2*o9g+ldlyx *dea3gmsm;i,lozgnch? (The resistivity ofs3xlli zodgm93;d ml*eo1+ 2g*,y az g copper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1. g(,*4/hc2mu 8 tmscvsrlhcup mp d0-70 cm in diameter and 45 m long, if the resistivity hrphcd 8c,tuvm7ug2s 4(0mcl- *s/mpis $1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copperq yjkg4/q b7 vu)dll4+ wire (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire (resistivite0-mc hlt6uasn 5e*6s ;juz,t,szl*ry $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, ;p fv2we0y:rc 0 otg+cmeasures 0.040 ohms. What is its resistivity?

  Calculate the current th-*e- fa r7dmfprough a 10.0-m long 22 gauge (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0---dpr *m fef7aV battery. (The resistivity of nichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cr.a.n+ 24zy elsgulhb3f5j kl6oss-section, 1.0 cm x 2.0 cm. What is the voltage drop along2a3 y56ls4lbl e+kg z ..fnuhj its length when it carries 4000 A? (The resistivity of copper is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a radiw +q+i) z-kj+-d hvwj*u ng1hhus of 0.50 mm and a resistivity of $100 \times 10^{-8} \; \Omega \cdot m$. If the wire carries a current of 0.50 A, what is the voltage across the wire?

  A 1.0-mm diameter copper wire (resistk(0 q2bpv)2bn9q/uvk , dnrkg ivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a res) rc4n i0f(nsx:* wrstistance of $18 \Omega$ at a temperature of $20 ^{\circ}C$. What is its resistance at a temperature of $120 ^{\circ}C$? (The temperature coefficient of resistivity for carbon is $-5.0 \times 10^{-4} /^{\circ}C$.)

  The temperature coefficient of resistivity of platinum isen3s3/2+nn mt jxduy, $3.9 \times 10^{-3} /^{\circ}C$. If a platinum wire has a resistance of R at room temperature ($23 ^{\circ}C$), to what temperature must it be heated in order to double its resistance to 2R?

  A platinum wire is used to determine the meltingw 8 qg b72,zky oox6tbq9n2(yx point of indium. The resistance of the platinum 6o9q7xz 2ygnt q(yxbk ,wo2b8wire is $2.000 \; \Omega$ at $20 ^{\circ}C$ and increases to $3.072 \; \Omega$ as indium starts to melt. What is the melting point of indium? (The temperature coefficient of resistivity for platinum is $3.9 \times 10^{-3} /^{\circ}C$.)

  5.00 A is flowing throughj 8;ys95* lr.jrohrfz an $10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated a,oc0ae 6-)t3 iah4 zdi44qh1oxexuivv*ult /t 1200 W. What current will it draw?

  A 150-W light bulb running on 110 V draws how much 7tnp/;q o klj0a(pax+current?

  What is the nominal resistance of a 100-W light bulb design4dlehexo (wq /d8p2,5evear2ed to be used in a 120- opxhqev2/elew a8d 5,d4r2e(V circuit?

  A toaster is rated 800 W at 120 V. What.wqab:pnnz1v60d7 7c4zrcyc is the resistance of its heating elementqpcr 4nn :czc.ba 6d vzwy7710?

  A 200-W resistor is rataud07jmu,x (q ed at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated atpv+nl5h3qk uxe. cq7hr+**a s $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what curreeex zx3)s a19tnt does it draw?

  A lamp uses a 150-W bulb. If it is used at 120 V, wh+yu- q czku.t)7bvz+v-a0 sonat is its resistance?

  A 25-W soldering iron runs on 11o3hl : 7da*sxp0 V. What is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hd( p l wi +d2 nyfeyk0k:kyk)w4/1b,ojours, if energy cost/2wykkw(,dy4p0 ey)i j kon+bf kld :1s $0.08/kWh?

  How much energy does a 100-W light bulb use in 8.0 houra2x3ux9q b m6qs?

  A 1500-W heater is connected to a 120-V lin+l*brgn2co a8e for 2.0 hours. How much heat energy is +cba lor *n82gproduced?

  A battery is rated at 12 V and 160 A-h. md 0z6v;8sgv:jf 3nfk How much energy does the battery store?k063vfm 8zg ;jsvf d:n

  How much energy does a 25-W (sxc7 uel4xu/ soldering iron use in 8.0 hours?

  A 100-W driveway light bulb9 3rceiqlewgz v *:4i4 is on 10 hours per day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate the 4ez:w r4i93*cgvil eqannual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per6:zbvn0w1 : ttlrzw 2e day. If electricity costs 10 cents per kWh, how much does it cost to run w v0:1zb 2 t6eztwrl:nthe computer annually?

  The monthly (30 days) electric bilb bl 99r:i rylo+2omd0l included the cost of running a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series connection of ten 60 W light bulbs for 5.0 hr/day. How much did these items contribute to the cost of the monthlyboy0:r ro9d 9 2mll+bi electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electric drier operates on 240 V and9trj+/m** dg rv0rw )k6q9 h3zqupwqp generates heat at the rate of 2.1 kW. h0 v9q+r* )6ppztrqgr kuq9d3 m jw/*wThe heating element shorts out and, in repairing it, the owner shortens the Nichrome wire by 10%. (Assume the temperature is unchanged. In reality, the resistivity of the wire will depend on its temperature.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flows through k;f( ji8p g-:0 h v:)fkhiw* nc/vcjkl$8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery cost bs1(4(jmz,quj cuae9 - oss7us $1.49, and will run a portable CD player for 6.0 hours. Suppose the battery supplies a current of 25 mA to the player. What is the cost of energy in dollars per kWh?

  A motor that can do work at the rate of 2.0 hp has 60% efficiency. How much curh.mxcfs 8hl0; rent does it draw fro hc.0xl8;hsmf m a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power soj(e ohf hr2e+5urce. What rms current flows through this devic(oe2hj +5ehrf e?

  A 500-W device is connected to a 120-V ac power source. What peak curas hb.em- c8e7rent flows through t mc7h-e8. asbehis device?

  A 500-W device is connected to a 120io v+t-kkaw +/-V ac power source. What is the peak voltagi-akv/wo+t+k e across this device?

  The diameter of a copper wire is 0.081 inch. The :y6 czpphv8tzf/z)y9 maximum safe current it can carry (in order to prevent fire danger in building construction) is 20 A. At this current, what is the drift velocity of the electrons? (The number of electron carriers )tfpzy/9:6z 8y chvp zin one cubic centimeter of copper is $8.5 \times 10^{22}$.)